Re: Encrypting Largish Files

Well, you could kill two birds with one stone, zip allows you to encrypt a zipfile with a password. That way you can compress and protect in one step... dunno how secure it is, but it's worth looking into

- Ant
- Some of my best work - Fish Dinner

Comment on Re: Encrypting Largish Files

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Re: Re: Encrypting Largish Files by IndyZ (Friar) on Sep 23, 2001 at 08:56 UTC
Zip file security is extremely weak. It won't even stop a 5 year old if he can download a few utilities off the net. -- IndyZ	[reply]
Re: Re: Re: Encrypting Largish Files by suaveant (Parson) on Sep 23, 2001 at 09:11 UTC
I was curious as to how well it encrypted... any other zippers have that function? - Ant - Some of my best work - Fish Dinner	[reply]
Re: Re: Re: Re: Encrypting Largish Files by IndyZ (Friar) on Sep 23, 2001 at 23:38 UTC
I think that zip file encryption started with pkzip (I'm not sure, but that's the first place that I saw it), and anybody that wanted to maintain compatibility had to add it to their zip software. If you want to encrypt a zip file, you should probably use a strong algorithm that comes in an encryption package such as GPG. -- IndyZ	[reply]
Re: Re: Re: Re: Re: Encrypting Largish Files by John M. Dlugosz (Monsignor) on Sep 24, 2001 at 08:38 UTC
Re: Re: Encrypting Largish Files by guillaume (Pilgrim) on Sep 23, 2001 at 22:30 UTC
In fact zipfile encryption is weak, the cipher is vulnerable to a known plaintext attack, if you already know a part of what is encrypted you can easily break the encryption. --- Guillaume	[reply]